Here is an ASCII mu (the kanji):
%%%,,
,%%%%%%"
%%%%%%
%%%%%" ,%%,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%" %%%% %%%% %%%% %%%%
%%" %%%% %%%% %%%% %%%%
,%" %%%% %%%% %%%% %%%%
%%%% %%%% %%%% %%%%
%%%% %%%% %%%% %%%% ,%%,
"%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% %%%% %%%% %%%%
%%%% %%%% %%%% %%%%
%%%% %%%% %%%% %%%%
%%%% %%%% %%%% %%%%
%%%% %%%% %%%% %%%% ,%%,
"%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
"%, "%%,, ""%%,, ""%%,,
%%% %%%%, %%%%, "%%%%,
,%%%%% %%%%% "%%%%% "%%%%%,
%%%%%%% %%%%%% %%%%%% "%%%%%
"%%%%" "%%%" "%%%" "%%%"
(And for those with browsers that can show unicode: 無)